A method of generating a haptic effect on a linear resonance actuator (“LRA”) having a resonant frequency includes receiving a haptic effect signal for the haptic effect, where the haptic effect comprises a desired frequency that is off-resonant from the LRA. The method further includes generating a first sine wave at the desired frequency and generating a second sine wave at or near the resonant frequency. The method further includes combining the first sine wave and the second sine wave to generate a drive signal.

Claims

18 · 2 independent · depth 5

18 granted claims

›1.independentA method of generating a vibratory haptic effect by a linear resonance actuator (LRA) having a resonant frequency, the method comprising: receiving an…+8

›2.↳ 1The method of claim 1 , wherein comparing the desired frequency to a critical range includes comparing the desired frequency to a single frequency poi…d2+3

›6.↳ 1The method of claim 1 , wherein the output haptic effect signal is determined as a signal at the desired frequency if the desired frequency is higher …d2

›7.↳ 1The method of claim 1 , wherein the output haptic effect signal is determined as a first sine wave at the resonant frequency enveloped with a second s…d2

›8.↳ 1The method of claim 1 , further comprising determining the output haptic effect signal according to a scaled addition of a first signal and a second s…d2

›9.↳ 1The method of claim 1 , further comprising determining the output haptic effect signal according to a scaled addition of a first signal and a second s…d2

›10.independentA haptic effect system comprising: a linear resonance actuator (LRA) having a resonant frequency; an actuator drive circuit coupled to the LRA; and a …+8

›11.↳ 10The system of claim 10 , wherein the critical range is a single frequency point.d2+3

›15.↳ 10The system of claim 10 , wherein the controller is further configured to determine wherein the output haptic effect signal as a signal at the desired …d2

›16.↳ 10The system of claim 10 , wherein the controller is further configured to determine output haptic effect signal as a first sine wave the resonant frequ…d2

›17.↳ 10The system of claim 10 , wherein the controller is further configured to determine the output haptic effect signal according to a scaled addition of a…d2

›18.↳ 10The system of claim 10 , wherein the controller is further configured to determine the output haptic effect signal according to a scaled addition of a…d2

Classifications

3 codes

IPC · International Patent Classification

Section G — Physics

G06F3/0488
G06F3/01
G08B6/00

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1.6 y

582 days filing → grant

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non-final + final

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no RCE

Examiner

Hongmin Fan

art unit 2686 · TC 2600

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Priority chain

2 priority documents

Priority

15 Mar 2013

earliest claimed

›Priority documents — 2

Type	Document	Date
provisional	US 61790190	15 Mar 2013
related publication	US 20190066459 A1	28 Feb 2019

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